Press Esc to close



For full content view: Log in Now!

  • What's new in shale technology

    Weatherford has developed a lower-cost fueling solution for shale field operations, with its DF RamForce, a pumping unit powered by a 2,500-hp Caterpillar (CAT) engine and transmission, equipped with a dual-fuel conversion package. The package, labeled DGB (dynamic gas blending) by CAT, allows for the use of diesel, natural gas, liquid propane or CNG in various combinations. The result is a dependable, economical fuel alternative that saves money and reduces the number of diesel tankers required to fuel pumping unit fleets during operations. The DF RamForce is built specifically for dual-fuel applications, and includes all-CAT parts (engine, transmission and fuel system) to ensure system integrity. It will soon come equipped with Weir fluid ends composed of stainless steel, which hold up to heavy pumping and are field-proven to out-last conventional carbon steel fluid ends. In some cases, operators have been able to replace up to 70% of diesel usage with unprocessed field gas.

This area of the site is restricted. In order to gain access, please either Log In, or subscribe to World Oil.

Two options are available to you for creating an account.

1. Get a Free Trial Subscription to World Oil Magazine and gain immediate access to select content on World Oil Online.

Start a Free Trial Subscription and gain immediate access to the complete current issue of World Oil Magazine. Plus, you’ll receive 3 upcoming issues of World Oil Magazine in print or digital format.* You also receive access to the Energy Events Calendar, Industry Statistics and WO Wire’s news and industry coverage.

Free Trial

2. Purchase a subscription to World Oil magazine and gain immediate and complete access to World Oil Online. As a Total Access subscriber you will have access to all areas of the site available to registered users and free subscribers as well as having access to such premium content areas as:

  • The Archives section containing over ten years of complete magazine archives,
  • The WO DataHub's engineering tables and directories,
  • The World Oil annual forecasts, including past predictions,
  • Select World Oil technical handbooks,
  • And much, much more!


Physical copies of this content may be available for purchase. Visit the Reprints & Back Issues section.

If you are already a paid subscriber and do not have access, please email



Engineering Data Tables

World Oil's specialized upstream Engineering Data Tables featuring the Drill Bit Classifier, Tubing Tables and more. Get Total Access today.


2013 Fracturing Technology

2013 Fracturing Technology


Upcoming Events